CAT3200, CAT3200-5
Low Noise Regulated Charge Pump DC-DC Converter
FEATURES
s
Constant high frequency (2MHz) operation
s
100mA output current
s
Regulated output voltage (5V fixed CAT3200-5,
s
Thermal overload shutdown protection
s
Low value external capacitors (1µF)
s
Foldback current overload protection
s
Shutdown current less than 1µA
s
CAT3200-5 in low profile (1mm thin) 6-lead
Adjustable CAT3200)
s
Low quiescent current (1.7mA typ.)
s
Input voltage operation down to 2.7V
s
Soft start, slew rate control
SOT23 package
s
CAT3200 in MSOP-8 package
APPLICATIONS
s
3V to 5V boost conversion
s
White LED driver
s
USB On-The-Go 5V supply
s
Local 5V supply from lower rail
s
Battery backup systems
s
Handheld portable devices
DESCRIPTION
The CAT3200 and CAT3200-5 are switched capacitor
boost converters that deliver a low noise, regulated
output voltage. The CAT3200-5 gives a fixed regulated
5V output. The CAT3200 has an adjustable output
using external resistors. The constant frequency 2MHz
charge pump allows small 1µF ceramic capacitors to
be used.
Maximum output loads of up to 100mA can be
supported over a wide range of input supply voltages
(2.7V to 4.5V) making the device ideal for battery-
powered applications.
A shutdown control input allows the device to be
placed in power-down mode, reducing the supply
current to less than 1µA.
In the event of short circuit or overload conditions, the
device is fully protected by both foldback current
limiting and thermal overload detection. In addition, a
soft start, slew rate control circuit limits inrush current
during power-up.
The CAT3200-5 is available in a 6-lead, 1mm max
thin SOT23 package. The CAT3200 is available in an
8-lead MSOP package.
TYPICAL APPLICATION
5V Output
Adjustable Output
CNEG
VIN
IN
CPOS
OUT
5V
VOUT
100mA
VIN
IN
CNEG
CPOS
OUT
VOUT
100mA
R1
FB
GND
R2
CAT3200-5
+
3.3V
-
ON OFF
SHDN
GND
CAT3200
+
3.3V
-
ON OFF
SHDN
R
VOUT = 1.27 V 1+ 1
R2
(
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
(
Doc. No. MD-5002, Rev. L
CAT3200/3200-5
ORDERING INFORMATION
Part Number
CAT3200TDI-T3
CAT3200ZI-T3
CAT3200ZI-GT3
Output Voltage
5V
Adjustable
Adjustable
Package
6-lead thin SOT23, Lead Free
8-lead MSOP, Lead Free
8-lead MSOP, NiPdAu
Package Marking
LN
ABME
ABRU
Quantity
per Reel
3,000
3,000
3.000
PIN DESCRIPTIONS
Designation
OUT
GND
SHDN
CNEG
IN
CPOS
FB
PGND
SGND
Description
Regulated output voltage.
Ground reference for all voltages.
Shutdown control logic input (Active LOW)
Negative connection for the flying capacitor.
Input power supply.
Positive connection for the flying capacitor.
Feedback to set the output voltage.
Power ground.
Signal ground.
PIN CONFIGURATION
6-lead Thin SOT23
OUT
GND
SHDN
1
2
3
CAT3200-5
6
5
4
CPOS
IN
CNEG
CPOS
IN
CNEG
PGND
1
2
8-pin MSOP
8
7
OUT
FB
SHDN
SGND
CAT3200
3
4
6
5
Doc. No. MD-5002, Rev. L
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT3200/3200-5
ABSOLUTE MAXIMUM RATINGS
V
IN
, V
OUT
,
SHDN,
C
NEG
, C
POS
Voltage .. -0.6V to 6.0V
V
OUT
Short Circuit Duration ......................... Indefinite
Output Current ................................................ 200mA
ESD Protection (HBM) ..................................... 2000V
Junction Temperature ...................................... 150°C
Storage Temperature Range ............. -65°C to 160°C
Lead Soldering Temperature (10 sec) ............. 300°C
Power Dissipation (SOT23-6) ............................ 0.3W
Power Dissipation (8-MSOP) ............................. 0.5W
RECOMMENDED OPERATING CONDITIONS
V
IN ...................................................................................
2.7V to 4.5V
C
IN
, C
OUT
, C
FLY
..........................................................................
1µF
I
LOAD .................................................................................
0 to 100mA
Ambient Temperature Range ................... -40°C to 85°C
ELECTRICAL SPECIFICATIONS
Recommended operating conditions unless otherwise specified. C
IN
, C
OUT
, C
FLY
are 1µF ceramic capacitors and V
IN
is set to 3.6V.
Symbol
V
OUT
V
LINE
V
LOAD
F
OSC
V
R
η
I
GND
I
SHDN
V
FB
I
FB
R
OL
T
ON
V
IHSHDN
V
ILSHDN
I
ROUT
I
SC
T
SD
T
HYST
Parameter
Regulated Output
Line Regulation
Load Regulation
Switching Frequency
Output Ripple
Voltage
Efficiency
Ground Current
Shutdown Input
Current
FB Voltage
FB Input Current
Open-Loop
Resistance
V
OUT
Turn-on time
(10% to 90%)
High Detect
Shutdown Threshold
Low Detect
Shutdown Threshold
Reverse Leakage
into OUT pin
Short-circuit Output
Thermal Shutdown
Thermal Hysteresis
V
OUT
= 5V, Shutdown mode (Note 2)
V
OUT
= 0V
0.4
15
80
160
20
30
I
LOAD
= 0mA, V
IN
= 3V
0.5
0.8
1.3
ms
V
V
µA
mA
°
C
°
C
I
LOAD
= 100mA
CAT3200-5 Only
I
LOAD
= 50mA, V
IN
= 3V, CAT3200-5
I
LOAD
= 0mA,
SHDN
= V
IN
I
LOAD
= 0mA,
SHDN
= 0V to V
IN
CAT3200 Only
CAT3200 Only
I
LOAD
= 100mA, V
IN
= 3V (Note 1)
1.22
-50
10
1.27
Conditions
I
LOAD
≤
40mA, V
IN
≥
2.7 V
I
LOAD
≤
100mA, V
IN
≥
3.1 V
3.1V
≤
V
IN
≤
4.5V, I
LOAD
= 50mA
I
LOAD
= 10mA to 100mA, V
IN
= 3.6V
1.3
Min
4.8
Typ
5.0
6
20
2.0
30
80
1.6
4
1
1.32
50
2.6
Max
5.2
Units
V
mV
mV
MHz
mVp-p
%
mA
µA
V
nA
Ω
Note 1: R
OL
= (2V
IN
- V
OUT
)/I
OUT
Note 2: In the event of a controlled shutdown, the output will be isolated from the input, but will remain connected to the internal resistor
feedback network. This will cause a small level of reverse current to flow back into the device to ground.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc No. MD-5002, Rev. L
CAT3200/3200-5
TYPICAL PERFORMANCE CHARACTERISTICS (CAT3200-5)
T
AMB
=25°C, C
IN
=C
OUT
=C
FLY
=1µF, V
IN
=3.3V unless specified otherwise.
Shutdown Input Threshold vs. Supply Voltage
SHUTDOWN THRESHOLD [V] .
Ground Current vs. Supply Voltage (No Load)
2.2
GROUND CURRENT [mA]
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
2.7
3.0
3.3
3.6
3.9
4.2
INPUT VOLTAGE [V]
4.5
2.0
1.8
1.6
1.4
1.2
2.7
3.0
3.3
3.6
3.9
INPUT VOLTAGE [V]
4.2
4.5
Line Regulation
5.2
Load Regulation
5.2
OUTPUT VOLTAGE [V] .
OUTPUT VOLTAGE [V] .
5.1
20mA Load
5.0
100mA Load
4.9
5.1
VIN = 3.2V
5.0
VIN = 3V
4.9
VIN = 2.7V
4.8
4.8
2.7
3.0
3.3
3.6
3.9
INPUT VOLTAGE [V]
4.2
4.5
0
50
100
LOAD CURRENT [mA]
150
Oscillator Frequency vs. Supply Voltage
2.6
OSCILLATOR FREQUENCY [MHz]
Efficiency
100
90
EFFICIENCY [%]
vs. Load Current
VIN= 2.7V
VIN= 3.2V
VIN= 3.7V
2.4
2.2
2.0
1.8
80
70
60
50
40
VIN= 4.5V
1.6
2.7
3.0
3.3
3.6
3.9
INPUT VOLTAGE [V]
4.2
4.5
30
1
10
LOAD CURRENT [mA]
100
Doc. No. MD-5002, Rev. L
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT3200/3200-5
TYPICAL PERFORMANCE CHARACTERISTICS (CAT3200-5)
T
AMB
=25°C, C
IN
=C
OUT
=C
FLY
=1µF, V
IN
=3.3V unless specified otherwise.
Soft Start Power Up (90mA Load, 3.3V Input)
Load Step Response (3.3V Input)
Output Ripple (100mA Load, 3.3V Input)
Short Circuit Current vs Supply Voltage
250
200
150
100
50
0
2.7
3.0
3.3
3.6
3.9
4.2
INPUT VOLTAGE [V]
4.5
Output Voltage Change vs. Temperature
OUTPUT VOLTAGE CHANGE [%] .
CURRENT LIMIT [mA] .
2
Oscillator Frequency Change vs. Temperature
4
FREQUENCY CHANGE [%] .
80
100
1
10mA Load
0
2
0
-1
-2
-2
-40
-20
0
20
40
60
TEMPERATURE [ C]
-4
-40
-20
0
20
40
60
TEMPERATURE [ C]
80
100
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc No. MD-5002, Rev. L
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